Answer: A hierarchical data base is a data model in which the data is organized into a tree-like structure. The structure allows repeating information using parent/child relationships: each parent can have many children but each child only has one parent

A hierarchical data base is a data model in which the data is organized into a tree-like structure. The structure allows repeating information using parent/child relationships: each parent can have many children but each child only has one parent Source: CoolInterview.com

A hirarchical database is a database which formed with a root nodes and leaf nodes.An leaf node is the last node and each root node having atleasr one node. this may not be the last node connected in a tree-like structure. Source: CoolInterview.com